ebiten/examples/shader/texel.go
2022-11-03 12:55:14 +09:00

26 lines
842 B
Go

// Copyright 2020 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build ignore
package main
func Fragment(position vec4, texCoord vec2, color vec4) vec4 {
pos := position.xy / imageDstTextureSize()
origin, size := imageDstRegionOnTexture()
pos -= origin
pos /= size
return vec4(pos.x, pos.y, 0, 1)
}